65686671048 has 32 divisors (see below), whose sum is σ = 168221964960. Its totient is φ = 21361518720.

The previous prime is 65686670999. The next prime is 65686671121. The reversal of 65686671048 is 84017668656.

It is a super-2 number, since 2×65686671048² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33376390 + ... + 33378357.

It is an arithmetic number, because the mean of its divisors is an integer number (5256936405).

Almost surely, 2^65686671048 is an apocalyptic number.

It is an amenable number.

65686671048 is an abundant number, since it is smaller than the sum of its proper divisors (102535293912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65686671048 is a wasteful number, since it uses less digits than its factorization.

65686671048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66754797 (or 66754793 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 65686671048 in words is "sixty-five billion, six hundred eighty-six million, six hundred seventy-one thousand, forty-eight".